首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
Few foods are more alluring than chocolate. "Chocolate is a drug of abuse in its own category," jokes Dr. Louis Aronne. "It’s ah
Few foods are more alluring than chocolate. "Chocolate is a drug of abuse in its own category," jokes Dr. Louis Aronne. "It’s ah
admin
2012-01-27
22
问题
Few foods are more alluring than chocolate. "Chocolate is a drug of abuse in its own category," jokes Dr. Louis Aronne. "It’s ahnost as if people have chocolate receptors in their brains. "
That may not be too far off the mark. In a recent book called "Breaking the Food Seduction," Dr. Neal Barnard contends that certain foods—including chocolate, cheese, red meat and practically anything combining sugar and fat—are just plain addictive. " It’s not that you lack willpower. These foods stimulate the release of chemicals in the brain’s pleasure center that keep you hooked. "
Besides tapping the brain’s own "feel good" chemicals, Barnard says, some of these foods contain drug-like molecules (分子) of of their own. Cheese delivers casomorphins, the same compounds in a mother’s milk that help an infant bond during nursing, he says, but cheese is even more powerful, because it delivers casomorphins in an undiluted form. The result: "We’re bonding to our refrigerators. "
Other scientists doubt these drug-like compounds have enough force to make the foods addictive. But no one denies that fat and sugar exert a strong appeal. The brain is designed to reward eating and other behaviors that promote survival. And throughout history, with food relatively hard to come by, what prmnoted survival better than calorie-dense foods packed with fat and sugar? Besides, fat and sugar also calm the brain, lowering levels of stress hormones. "That’s why we call them comfort foods," says physiologist Mary Dallman.
But comfort is different from addiction. In classic addiction, the brain grows less sensitive to a pleasurable substance, and the addict requires higher and higher doses to derive the same rewards. Can food cause that kind of change? Perhaps. In a new study, Ann Kelley offered rats either plain water or a high-calorie chocolate drink. Over a two-week period, the animals drank more and more chocolate, but produced fewer brain opiates(镇静剂) in response. "You see the same thing in rats on morphine or heroin," she says.
Admittedly, some foods can be hard to stop eating. But these foods are less habit-forming than alcohol—and most people can enjoy a drink without becoming alcoholic. The real problem today may be that we’re constantly surrounded with food—and can’t undo millions of years of evolution.
What does the author think of the theory that certain foods are addictive?
选项
A、The theory does not make any sense.
B、The theory presents a forceful argument.
C、The theory does not touch on the real problem.
D、The theory represents a scientific breakthrough.
答案
C
解析
转载请注明原文地址:https://www.kaotiyun.com/show/mpmi777K
0
在职申硕(同等学力)英语
相关试题推荐
Musiccomesinmanyforms;mostcountrieshaveastyleoftheirown.【C1】______theturnofthecenturywhenjazz(爵士乐)wasborn,Am
Thegeneraltopicofthepassageis______.WhichofthefollowingstatementsisNOTTRUEaccordingtothepassage?
ThenumberofpermanentcrewontheInternationalSpaceStationwillbeincreased,andpossiblydoubled,from2006byproviding
Experiencedbaseballfielderscantellhowfaraballisgoingtotraveljustbylisteningtothecrackofthebat.Iftheydidn
Experiencedbaseballfielderscantellhowfaraballisgoingtotraveljustbylisteningtothecrackofthebat.Iftheydidn
Participantobservationalsoreflectsanthropology’sdualnatureasbothascientificandahumanisticdiscipline.Throughthes
Oneofthemostwidelydiscussedsubjectsthesedaysisenergycrisis.Automobiledriverscannotgetgasoline;homeownersmayno
IsthereenoughoilbeneaththeArcticNationalWildlifeRefuge(ANWR)tohelpsecureAmerica’senergyfuture?PresidentBushcer
Whereonestageofchilddevelopmenthasbeenleftout,ornotsufficientlyexperienced,thechildmayhavetogobackandcaptu
随机试题
以下哪项符合茶馆灯光使用注意事项
患者男性,23岁,发现睾丸增大,质地变硬,伴有沉重感,无明显压痛,B型超声提示睾丸增大,内部回声均匀。此病最常见的病理类型是
四凹征
采用挤密法处理湿陷性黄土地基,当处理深度为()m时,不宜采用预钻孔。
消防给水系统按水压,可分为低压消防给水系统、高压消防给水系统、稳高压消防给水系统和临时高压消防给水系统。其中在消防给水系统管网中,平时最不利处消防用水点的水压和流量不能满足灭火时的需要,在灭火时启动消防泵,使管网中最不利处消防用水点的水压和流量达到灭火的要
计算机中用来表示一个二进制位的单位是()。
2016年甲公司与乙公司签订股权转让协议,甲公司将所持丙公司30%的股权转让给乙公司。2017年丙公司股东大会审议通过股权转让协议;2018年完成股权变更手续;2019年乙公司付讫股权转让价款。甲公司该股权转让企业所得税收入确认的年度是(
上市公司同次发行的相同条款优先股,每股发行的条件、价格和票面股息率应当相同。()
现代世界各国宪法均将人格权的保护放在重要位置,民法中也有对特别人格权和一股人格权的规定。下列选项中与其他三项不属于同一类别的是()。
认识的主体
最新回复
(
0
)